before an ESI include at one level, and then again at a higher level.

Fixed by not closing the session in this case, as that will be taken
care of at the end of delivery anyways when V1L_FlushRelease is
called.

Fixes: 		#1737
Submitted by:	Martin

stuff on this TCP connection with timeouts" function.

Inpired by colliding patches from Martin & Lasse.

error has been long retired.

Mark optional parts as such and briefly document components. Sync with
the man page. The address part for options -a and -b is technically
optional too.

We should perhaps rename this parameter away from sigsegv_handler?
Maybe error_sighandler? Maybe move it into a feature bit for the
disabling instead of a separate parameter too.

This allows for a panic dump and backtrace to be produced on
sigabrt. This is useful e.g. when using jemalloc's debug flags, which
can through a special environment variable enable memory allocation
consistency checks and trigger sigabrt on errors.

Reported and diff submitted by Gauthier Delacroix on varnish-dev.

Makes this work with multiple instances under systemd.
Discussed with ingvar on irc.

Fixes startup if vcl_dir was specified in DAEMON_OPTS.
Reported by Gauthier Delacroix. Discussed with ssm on irc.

Fixes #1765

understand them.

Fixes: #1770

For continuous updates we can always use a shell loop.

Fixes #1760.

Please note that using underscore in HTTP headers is considered a
really bad idea because many application frameworks map minus to
underscore in environment variables.

Fixes: 	#1768

Discussed with Martin.

Add commas to panic line endinges consistently